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Articles, tools, and commentary on carbon
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Jun 17 2021
Depth matters for soil carbon accounting
Jun 17 2021
Estimating soil carbon based on samples is tricky to get right. We explored the role of sampling depth when estimating soil carbon, to show why it matters, and how to avoid common pitfalls.
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article
Estimating soil carbon based on samples is tricky to get right. We explored the role of sampling depth when estimating soil carbon, to show why it matters, and how to avoid common pitfalls.
May 26 2021
New lessons from reviewing carbon removal proposals
May 26 2021
We analyzed project proposals submitted for Stripe's Spring 2021 Carbon Removal Purchase. Explore our updated database of project reports or read the article for our takeaways and lessons learned.
articledataset
We analyzed project proposals submitted for Stripe's Spring 2021 Carbon Removal Purchase. Explore our updated database of project reports or read the article for our takeaways and lessons learned.
May 20 2021
May 20 2021
Forests in the United States are already at risk from wildfire, drought, and insects, and climate change is making it worse. We combined satellite and ecological data with climate models to project future risks to forest carbon. Along with a preprint, we are releasing open data, open software, and an interactive web map.
articledatasetpublicationtool
Forests in the United States are already at risk from wildfire, drought, and insects, and climate change is making it worse. We combined satellite and ecological data with climate models to project future risks to forest carbon. Along with a preprint, we are releasing open data, open software, and an interactive web map.
Apr 29 2021
Systematic over-crediting of forest offsets
Apr 29 2021
California's forest offset program is worth over $2 billion. We analyzed detailed public records to show how statistical flaws in the program's design have led to over-crediting — at a scale of tens of millions of tCO₂ and hundreds of millions of dollars.
articledatasetpublicationtool
California's forest offset program is worth over $2 billion. We analyzed detailed public records to show how statistical flaws in the program's design have led to over-crediting — at a scale of tens of millions of tCO₂ and hundreds of millions of dollars.
We analyzed project proposals submitted for Microsoft's 2021 Carbon Removal Purchase. Explore our updated database of project reports or read the article for our takeaways and lessons learned.
Feb 01 2021
DAC cost calculator
Feb 01 2021
Our interactive tool helps explore the cost of direct air capture (DAC) coupled to stand alone energy sources. Try the tool, or read the article to learn more about the model.
articletool
Our interactive tool helps explore the cost of direct air capture (DAC) coupled to stand alone energy sources. Try the tool, or read the article to learn more about the model.
Jan 14 2021
CDR Primer
Jan 14 2021
A new resource on the fundamentals of carbon dioxide removal and its role in addressing the climate crisis. Our team helped write, edit, and produce this free, online digital book.
publication
A new resource on the fundamentals of carbon dioxide removal and its role in addressing the climate crisis. Our team helped write, edit, and produce this free, online digital book.
Jan 05 2021
Letter to Taskforce on Scaling Voluntary Carbon Markets
Jan 05 2021
A coordinated effort to standardize and scale today's voluntary offsets market is underway. We submitted a joint letter with Carbon Direct and the Berkeley Carbon Trading Project detailing how the Taskforce is ignoring the problem of poor quality rampant in today's market. That problem needs to be addressed first.
comment
A coordinated effort to standardize and scale today's voluntary offsets market is underway. We submitted a joint letter with Carbon Direct and the Berkeley Carbon Trading Project detailing how the Taskforce is ignoring the problem of poor quality rampant in today's market. That problem needs to be addressed first.
Dec 09 2020
Permanence calculator
Dec 09 2020
Our interactive tool helps compare the long-term cost of temporary and permanent carbon removal. Try the tool, or read the article to learn about the methods and implications.
articletool
Our interactive tool helps compare the long-term cost of temporary and permanent carbon removal. Try the tool, or read the article to learn about the methods and implications.
Sep 17 2020
Carbon offsets burning
Sep 17 2020
Fire poses a key risk to the permanence of forest carbon. We analyzed a large fire during the 2020 fire season and analyzed its impact on a forest carbon offset project.
article
Fire poses a key risk to the permanence of forest carbon. We analyzed a large fire during the 2020 fire season and analyzed its impact on a forest carbon offset project.
Jul 24 2020
Carbon removal mechanisms
Jul 24 2020
Carbon removal is confusing because there are many approaches, and all affect the carbon cycle in different ways. In this article we develop and explain a typology for comparing approaches.
article
Carbon removal is confusing because there are many approaches, and all affect the carbon cycle in different ways. In this article we develop and explain a typology for comparing approaches.
Team members contributed to a review paper on physical risks to forest carbon, like fire, drought, and insects, and why that matters for thinking about the role of forests in climate change mitigation.
There are good reasons to be excited about soil carbon sequestration, but rigorous quantification remains a challenge. We analyzed a carbon offset protocol and wrote multiple letters raising concerns related to program design and scientific integrity.
We analyzed project proposals submitted for Stripe's 2020 Negative Emisions Purchase. Explore our database of project reports or read the article for our main takeaways and lessons learned.
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